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(No Model.)

0. JUNKER.

ROTARY SHUTTLE FOR SEWING MACHINES Patented May 4, 1886.

N. PETERSv Phnmillllcgmphcn Washinglun. n. c.

UNITED STATES PATENT- OFFICE.

CAR-L JUNKER, OF GABLSRUHE, GERMANY, ASSTGNOR TO JUNKER & RUH,

OF SAME PLACE.

ROTARY SHUTTLE FOR SEWING-MACHINES.

QZJPEQ-IEFECAIION forming part of Letters Patent No. 341,333, dated May 4, 1886.

Application filed August 3, 1885. Serial No. 173,401. (No model.)

To all whom, it may concern.-

Be it known that I, CARL J UNKER, a citizen of Germany, and resident at Oarlsrnhe, Ger many, have invented new and useful Improvements in Rotary Shuttles for Sewing-Machines, of which the following is a specification.

This invention relates to improvements in sewing-machines patented to me by Letters Patent of the United States of America,dated March 20, 1883, No. 274,381.

Reference is to be had to the accompanying drawings, forming part of this specification, wherein the same letters are applied to'the same parts in all the figures.

Figure 1 is a side view of my invention as applied for use. Fig. 2 is a sectional view thereof on the line 00 as of Fig. 1, and Figs. 3 to 11 are detail views of my invention.

In the shuttle B the axes of the spool and shuttle coincide. The case 38 of the shuttle 37 contains a pin, 39, on which is placed the spool-case 40", which holds the spool. The spool-case 40 has a hollow pin, 41', and a tension device, 42". Upon the hollow pin 41 is placed the tube 43", which is furnished with springs 44 and carries the spool 45".

The hole of the spool has a small groove in it,in which a lug on the tube 43 is received,and the rotation of the spool is made steady by the action of the springs. From the spool 45 the thread passes through the hole 46 of the case the hole 47 of the tension-plate 42", between the springs 48" and 49", and through the hole 50. The regulation of the tension is efiected by means of the screw 51,which connects the two springs 48" and 49". No further arrangement is required for holding the spool in the case 38.

I claim- A uniformly vertically-rotating shuttle, B, of semicircular shape, held by the driver,the axes of the spool and shuttle being coincident, the shuttle consisting of the parts 87, 38, 39, 40", 41", 42", 43, 44", 48", 49', and. 51 and the holes for the tension of the thread, all sub stantially as herein described and shown.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CARL J UNKER.

XVitnesses:

FRANZ HASSLAOI-IE'R, JOSEPH PATRICK. 

